Rattus tiomanicus

DISTRIBUTION: Endemic to the Sunda Shelf and some offshore islands. Records on the Shelf are from peninsular Thailand south of Isthmus of Kra (10 ° 30 ' N), the Malay Peninsula, Sumatra, Java, Bali, Borneo, Palawan, and many smaller islands. Off the Sunda Shelf, R. tiomanicus is documented from Enggano Isl, southwest of Sumatra, and Maratua Arch., east of Borneo (Musser and Calafia, 1982; Musser and Heaney, 1985).

Sumber: Order Rodentia - Family Muridae

DISTRIBUTION: Malaya to Borneo and Palawan; many small adjacent islands.

Sumber: Order Rodentia (Part 5)

Habitat. Secondary and coastal forests, plantations, gardens, scrubland, grassland, grassland-forest mosaic, selectively logged forest, rice fields, mossy forest, and transition zone between mossy and montane forest. The Malaysian Field Rat is mostly found in lowland habitats and rarely houses.

Sumber: Muridae

Movements, Home range and Social organization. Malaysian Field Rats lived at high densities within a palm plantation, with 183 - 539 ind / ha (average 305 ind / ha).

Sumber: Muridae

Status and Conservation. Classified as Least Concern on The IUCN Red List. The Malaysian Field Rat has a large distribution, is very common, is found in many protected areas, and is considered an agricultural pest in many regions, especially to stored grain and in palm oil plantations.

Sumber: Muridae

Descriptive notes. Head-body 140 - 190 mm, tail 150 - 200 mm, ear 20 - 4 mm, hindfoot 28 - 35 mm; weight 55 - 150 g. The Malaysian Field Rat is medium-sized, with sleek and smooth pelage and short stiff spines and shortish black guard hairs throughout, but shorter than those of the Roof Rat (R. rattus). Dorsum is grizzled olive-brown to reddish brown, being variable between populations and becoming lighter on sides. Venter is white with buffy white hair tips or grayish white with gray-tipped hairs; venteris demarcated from dorsum but notsharply. Feet are broad and completely white. Ears are long and lighter than dorsum, being lightly furred; vibrissae are long. Tail is 95 - 120 % of head-body length and unicolored dark brownish black. Skull is long, with relatively thin rostrum. The pinworm Syphacia muris has been recorded from the Malaysian Field Rat. There are five pairs of mammae: one pectoral, one post-axillary, one abdominal, and two inguinal. Chromosomal complement is 2 n = 42, FN = 62 or 64.

Sumber: Muridae